From: Nicholas Piggin <npiggin@gmail.com>
Date: Thu, 24 Oct 2019 06:38:04 +0000 (+1000)
Subject: scsi: qla2xxx: stop timer in shutdown path
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d3566abb1a1e7772116e4d50fb6a58d19c9802e5;p=linux.git

scsi: qla2xxx: stop timer in shutdown path

In shutdown/reboot paths, the timer is not stopped:

  qla2x00_shutdown
  pci_device_shutdown
  device_shutdown
  kernel_restart_prepare
  kernel_restart
  sys_reboot

This causes lockups (on powerpc) when firmware config space access calls
are interrupted by smp_send_stop later in reboot.

Fixes: e30d1756480dc ("[SCSI] qla2xxx: Addition of shutdown callback handler.")
Link: https://lore.kernel.org/r/20191024063804.14538-1-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index e4d765fc03eaf..39f7782a133b9 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3529,6 +3529,10 @@ qla2x00_shutdown(struct pci_dev *pdev)
 		qla2x00_try_to_stop_firmware(vha);
 	}
 
+	/* Disable timer */
+	if (vha->timer_active)
+		qla2x00_stop_timer(vha);
+
 	/* Turn adapter off line */
 	vha->flags.online = 0;